A5006646651- Fiber-reinforced polymer composites
- Graphene research and applications
- Carbon Nanotubes in Composites
- Mechanical Behavior of Composites
- Natural Fiber Reinforced Composites
- Graphite, nuclear technology, radiation studies
- Diamond and Carbon-based Materials Research
- Material Properties and Applications
- Smart Materials for Construction
- Graphene and Nanomaterials Applications
- Supercapacitor Materials and Fabrication
- Nanotechnology research and applications
- Ultrasonics and Acoustic Wave Propagation
- Epoxy Resin Curing Processes
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Dyeing and Modifying Textile Fibers
- Tribology and Lubrication Engineering
- Engineering Applied Research
- Advanced Cellulose Research Studies
- Mechanical stress and fatigue analysis
- Polymer Science and PVC
- Surface Treatment and Coatings
- Metallurgy and Material Forming
- Additive Manufacturing and 3D Printing Technologies
- Metal Forming Simulation Techniques
Kyushu University
2023-2025
Toray Industries, Inc. (Japan)
2012-2024
Toray (United States)
2012-2021
Tohoku University
2012
University of Manchester
2012
Recent advancements in enhancing the mechanical characteristics of carbon fibers open up new application possibilities for fibre-reinforced plastic (CFRP) composites. Particularly unidirectional CFRPs, which form basal structure CFRP laminates, developing a micromechanics model capable predicting tensile strength CFRPs based on fiber is current aspiration. This study conducted stress distribution analysis around fracture point to predict strengths prepared with five types polyacrylonitrile...
In this study, we determined the strength distribution of high-strength polyacrylonitrile-based carbon fibers different short gauge lengths (~1 mm) using both single-fiber-composite four-point bending test and single-fiber tensile test. We employed bimodal Weibull model to explain experimental data. found that value shape parameter for was higher than long lengths. This implies is governed by two flaw populations. The resin-impregnated fiber bundles predicted on basis in better agreement...
Carbon fiber (CF) obtained by pyrolysis of polyacrylonitrile (PAN-CF) surpasses metals in properties suitable for diverse applications such as aircraft manufacture and power turbine blades. PAN-CF at 1200-1400 °C shows a remarkably high tensile strength 7 GPa, much higher than pitch-based CF (pb-CF) consisting piles pure graphene networks. However, little information has been available on the atomistic structure how it forms during pyrolysis. We pyrolyzed an acrylonitrile 9-mer carbon...
Abstract The application of edible coatings to dried products such as silkworms ( Bombyx mori ) is an innovative method for preserving nutrients during drying process. These are made from safe, natural ingredients carboxymethylcellulose (CMC), nano cellulose fibre (NCF), chitosan (N-Ch), and varying concentrations green pomelo peel essential oil (GPO). results revealed that the addition GPO into coating/film significantly changed pH, viscosity, TSS values coating solutions while reducing...
The prediction of tensile strength unidirectional CF/epoxy composites requires appropriately determining the distribution carbon fibers and calculating stress concentrations around fiber breaks. In this study, double-fiber fragmentation tests were performed to investigate concentration factor in adjacent a broken fiber. Simulation results obtained by considering additional due matrix cracks correspond well with breakage behavior observed experiments. Furthermore, using an bimodal Weibull...
Despite high mechanical properties of nanocarbons, such as graphene, which is believed to be the strongest material, they cannot sufficiently utilized structural materials. As an alternative, polyacrylonitrile (PAN)-based carbon fibers are used. In this study, PAN-based were investigated by imaging their nanostructures with atomic resolution. A graphene preparation technique was employed extract within fibers. Lattice fringes length ˃ 100 nm and width 10 observed significantly larger than...
We have used UV-Raman spectroscopy to study the sp3 structure in polyacrylonitrile- and pitch-based carbon fibres with Young's modulus values range of 90-830 GPa. The composite microstructure these comprises an amorphous phase that transfers load a reinforcing graphite crystalline phase. intensity ratio T, D G Raman bands showed low polyacrylonitrile-based (Young's modulus=200-300 GPa) contained 10-25% carbon, whereas stiffer >350 ∼5% material. This result suggests proportion decreases as is...
The nanostructure of PAN-based carbon fibers was comprehensively investigated, with an emphasis on amorphous carbon. In-situ measurement the crystallite deformation and micromechanical analysis revealed that amount in approximately 50%. In addition, mechanical properties could be obtained through analysis, which helped to identify structure. weight fraction sp2 layers calculated from analytical model based rule-of-mixtures using Raman spectroscopy data crystallinity by indicated differences...